Design of Composite Electromagnetic Wave Absorber Made of Soft Magnetic Materials Dispersed and Isolated in Polystyrene Resin
Design of Composite Electromagnetic Wave Absorber Made of Soft Magnetic Materials Dispersed and Isolated in Polystyrene Resin
复制标题
聚苯乙烯树脂分散隔离软磁材料复合电磁波吸收体的设计
DOI：
10.4028/www.scientific.net/kem.388.257
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
S. Yoshikado
中科院分区：
文献类型：
--
作者：
K. Sakai;Y. Wada;S. Yoshikado
研究了由软磁材料（坡莫合金或铁磁合金）和聚苯乙烯树脂制成的复合电磁波吸收剂[1]。磁性材料的体积混合比在18体积%至75体积%的范围内变化。在1 ~ 10 GHz频率范围内，低体积比软磁材料的复合材料吸收了99%以上的电磁波功率。两种磁性材料的相对复磁导率r * 的真实的部分r'的值随着磁性材料的体积混合比的增加而在高于约6 GHz的频率下小于1。这一结果表明，可能实现的电磁波吸收器，可以工作在10 GHz以上。
Composite electromagnetic wave absorbers made of a soft magnetic material (permalloy or sendust) and polystyrene resin were investigated [1]. The volume mixture ratio of magnetic material was varied in the range from 18 vol% to 75 vol%. The composites with the low volume mixture ratio of soft magnetic material absorbed more than 99 % of electromagnetic wave power in the frequency range from 1 GHz to 10 GHz. The values of the real part r’ of the relative complex permeability r * for both magnetic materials were less than unity at frequencies above approximately 6 GHz as the volume mixture ratio of magnetic material increased. This result suggests the possible realization of an electromagnetic wave absorber that can operate above 10 GHz.